If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities.

如果这种变暖发生，两极的冰帽将开始融化，从而使海平面上升数米，并严重淹没沿海城市。

youdao

Hong Kong-Zhuhai-Macao Bridge, the world's longest sea-based project, brings people in those three cities within a "one-hour living circle".

港珠澳大桥是世界上最长的海基工程，它将这三个城市的人们聚集在一个“一小时生活圈”内。

youdao

Nestled in a harbour along the Black Sea, Odessa is one of Ukraine's most diverse and atmospheric cities.

坐落在黑海沿岸的港口，敖德萨是乌克兰最具多样化和最有情调的城市之一。

youdao

If you move northwards along the Black Sea and southwards as well, Greek cities, not in the same number, they're fewer than they are in the places I've mentioned so far, but important ones.

倘若沿着黑海北上或者南下,也会看见希腊城市,但为数不多,比我目前所提到的所有地区都要少,但它们却非常重要

耶鲁公开课 - 古希腊历史简介课程节选

The risk of loss of lives and economic disaster in the southern Mediterranean is high due to strong population density along its coasts: around 150 million people concentrated in 46, 000 kms of coastline, 110 million of them living in cities bordering the sea and some 200 million tourists visiting the area every year.

UNESCO: Indigenous Peoples

During the next two centuries Miletus was far more active in colonization than any other city-state in the Greek world, founding a total of thirty cities around the Black Sea and its approaches in the Hellespont and the Sea of Marmara.

WSJ: 'Aladdin's Lamp'

Most cities in the developing world discharge their sewage untreated into rivers or the sea.

ECONOMIST: Bursting cities, bust infrastructure